Wrench



PatentedSept. 27, 1921.

nwmon rim/TH:

ATTOHNEKS A. W. MINNEY.

WRENCH.

APPLICATION FILED APR. 6,1921.

WIN/E8858 UNITED STATES PATENT OFFICE.

ARTHUR WELLS MINNEY, OF STOCKTON, CALIFORNIA.

WRENCH.

Application filed April 6,

Z '0 all whom it may concern Be it known that I, ARTHUR; WELLS MINNEY, acitizen of the United States, and a resident of Stockton, in the countyof San Joaquin and State of California, have invented certain new anduseful Improvements in Wrenches, of which the following is aspecification.

The present invention relates to improve ments in wrenches, and has forits object to provide an improved wrench which is of simple and durableconstruction, reliable in operation, readily adjustable and easy andinexpensive to manufacture, and which is adapted to powerfully grip theobject or work and to apply a powerful torque thereto without distortingor breaking the elements of the wrench.

Other objects and advantages of the invention reside in certain novelfeatures of construction, combination and arrangement of parts whichwill be hereinafter more fully described and particularly pointed out inthe appended claim, reference being had to the accompanying drawingsforming part of this specification, and in which: 7

Figure 1 is a side elevational view of the invention; I

Fig. 2 is an end elevational view thereof;

Fig. 3 is a transverse sectional view on line 33 of Fig. 1; and

Fig. 4 is a similar view on line 44 of Fig. 1.

Referring to the drawings wherein for the sake of illustration is shownthe preferred embodiment of the invention, the numeral 10 designates thebody portion of the wrench. The body portion is elongated and has formedtherein and extending longitudinally therethrough a slide bearing 11 ofpolygonal cross section. The body portion is also provided with atransverse opening or recess 12 extending from side to side thereof andintersecting the bearing.

An inner aw 15 is integrally formed with one end of the body portion 10.The outer jaw 16 is arranged in cooperative relation to the inner jawand these jaws constitute the coacting jaws of the wrench. The outer andinner jaws are provided with laterally enlarged working faces,designated at 15 and 16*, respectively.

A shank 18 is integrally formed or otherwise secured to the outer jaw16. The shank is polygonal in cross section and is slidably received inthe bearing 11 of-the body por- Specification of Letters Patent.

Patented Sept. 27, 1921.

1921. Serial No. 458,917. 2

tion. The side of the shankadjacent the jaws as well as thecorresponding wall of the bearing is slightly greater than the width ofthe jaws proper so that shoulders 19 are provided on the shank, asclearly shown in Fig. .2. An extension bearing 20 is integrally formedwith or otherwise secured to the body portion and is alined andcontiguous with the bearing 11. The wall of the extension bearing 20adjacent the jaws is however open to permit of the requisite movementalthough this open side of the bearing adjacent this open wall ispartially closed by longitudinally extending flanges 21 which slidablyembrace the shoulders 19 of the shank. In all working positions of thejaws this extension bearing and the flanges embrace the aws and theshank and maintain the jaws in alinement and in proper engagement withthe object or work.

Operating mechanism is provided for the coacting jaws and includes atraveling screw 23 which is integrally formed with or otherwise securedto the shank 18 of the outer jaw 16. The traveling screw is providedwith square threads 23 of relatively great.

pitch in order to effect speedy adjustment. A nut 24 is rotatablyournaled in the bearing provided therefor in the body portion 10 and itis provided with a threaded bearing 25 operatively engaged with thetraveling screw 23. The upper face of the nut 24 has secured thereto asleeve 26 which rotatably abuts the adjacent wall of the body portion. Aseat 27 is provided for the under face of the nut and serves also as aguard therefor. A plurality of longitudinally extending and spaced ribs28 is provided on the peripheral face of the nut and these ribs providea means whereby the nut may be readily turned.

Below the nut the body portionis provided with a tubular extension 10which houses and provides a bearing for the screw 23 and which alsoconstitutes a hand grip for the wrench.

In practice, the jaws of the wrench may be readily adjusted by means ofthe ribs 28 of the operating nut 24.. The seat 27 and the bearingprovided in the body portion support the, nut and its sleeve 26 so thatit may be readily rotated. When the nut is rotated its threaded bearing25 which is operatively engaged with the traveling screw 23 impartsmovement thereto. The shank being secured to the screw receives itsmovement and the movement of the shank as well of the screw isconstrained to the rectilinear by virtue of the polygonal bearing 30 andthe correspondingly polygonal cross section of the shank. WVhen the jawsare engaged with the object, they may exert a powerful torque thereonwithout danger of distortion and without impairing the engagement of thejaws with the object. This is brought about by virtue of the bearing andits flanges 21 engaging the shank 18 and the shoulders 19 thereofrespectively. These parts take up the stresses and main tain the jaws inalinement and consequently in proper engagement with the work.

I claim:

In a wrench of the character described, a body portion having alongitudinal bearing therein of polygonal cross section and having arecess extending from side to side thereof, a fixed jaw carried by saidbody portion, a movable jaw coacting with said fixed jaw, a shankcarried by said movable jaw and slidably received in the bearing of saidbody portion, ,said shank being of polygonal cross section and havingshoulders formed adjacent said movable jaw, an extension bearing carriedby the body portion and alined with its bearing and having longitudinalflanges slidably engaging the shoulders of the shank, a traveling screwsecured to the shank, a rotatable nut journaled in the recess of thebody portion and having a sleeve carried by one face and rotatablyabutting the body portion, a seat carried by the body portion androtatably abutting the other face of the nut, a plurality of ribscarried'by the traveling face of said nut, and a tubular extensioncarried by the body portion and constituting a bearing andhousing forthe traveling screw and a hand grip for the wrench.

ARTHUR WELLS MINNEY.

